Hose clamp



D. ARRAS HOSE CLAMP Nov.- 14, 1939.

Filed March 9, 1939 INVENTOR Damiano Anas.

ATTORN EYS Patented Nov. 14, 1939 1 y I v 4 UNITED STATES. P E T LOFFEEPr p I J 1 2,180,271 r @g r e nosii'cnsm nines... AITIS, New Britain,conn. .J np iiontion'maroii 9, 1939, Serial'No. 260,833 I s.cininn.(ecu-25o) e r This invention relates to hose clamps, and mediateportions l4 and I5 and upstanding} more particularly to aseli-lockinghose clamp spaced apart ends "and";

which is adjustable to fit hose at various diam- The wire clamp is firstfornied slightly smaller eters,-and hold it tightly on an interiorfitting. in diameter than the outside diameter of "the 5 Mostof the hoseclamps now in common use ho e, as indi ated in dot d lines inFig- 2, ,It5 are tightened uponthe fitting' by screws or bendisthenheat-treated toproduce a spring temper able clamping tongues. v therein, so that whenit is spread to the full line One object of the present'invention is to'proor. openfhose-engaging position. shown in Fig. 2, vide a hose clampoi' the above nature which will. it will exertia strong force tending toclose the automatically clamp the hose upon the interior clamp. 'I'he'-clamp be held in such spread 10 fitting by cutting a wire loop, whichoriginally apart condition by a closed elongated loop 20 holds the clampin spread-apart open position of soft easily cut wire vof sm ll iam te ithe ai'ter said clamp has been slipped over the hose ends of said loopbein engaged in ap -1r of I and moved to any desired location on'thelength notches l8 and I 9 formed in the outer sides or thereof. theupstanding ends it and I1 01' said clamp. 16

' Another object is to provide a hose clamp of After'the clamphas beenslipped over the'hose' the above nature which is adapted to close intoto h d sire p i i Shown i 1 he tight clamping contact upon a hose by itsown loop 20 may be e ily s y P r f P i tension to securely hold saidhose upon a fitting. n h wn, r y l n n the compressive ac- 20 A 'furtherobject of this invention is to protion of the strong wire of the clampwill exert 20 vide an improvedhose clamp of the above na- :1 Str n pressr up n h o ripp ng it ture which will be relatively inexpensive tomanuly'lll n he fi lng- The clamp so formed is iacture, simple inconstruction, compact, flexible preferably then chrom o nickel pl to prto permit expansion and contraction under vary- Vent n Y ing heatconditions, ornamental in appearance, he operation'of pressing theendsl6 and I1 and very efiicient and durable in us of the clamp toward eachother increases the in- With these and other objects in view, which l lm e 01 t dy D l n l3 in such will appear as the description proceeds,there a manner that e clamp is V i lly elonhave been illustrated in theaccompanying drawa e or lightly O 's p h vertical di- 3 ing two forms inwhich the invention may be ameter A s li htly reater than the horizontalconveniently embodied in practice. diame er B when in such open osition.1

In the drawing: r Fig. 1 is a perspective view showing a hose 1 f' clampem odyin e nvention at its appears In operation, aiter slipping thespread-apart in acme] use surrounding a hose and flttingloop-retainedhose clamp I! over the end Ill 35 Fig. 2 is an end view oi the same. ofthe hose, the hose in turn is slipped over the Fi 3 s a side v e o the aee hose end. of the fitting ll into the desired position. an fittingbeing h wn by dotted lines The loop 20 will then be severed by filing itor Fig. 4 is a top view of the clamp per se. cutting it with pliers.This permits the clamp 40 Fig. 5 is a view of a modified form of clampl2 to automatically spring into closed position, 40 as it appears inclosed position'ready to be spread indicated dotted lines in 8- and asapart to open position by 9, pair of tongs I shown in full lines in Fig.1, whereby the end It Referring now to the drawing wherein like ref- 0fthe 1159 will be evenly engaged t te erence numerals designate likeparts throughperiphery and securely clamped to the fitting ll,

out the several views, the numeral '0 denotes the clamp formingaperi'ectcircle whenin closed 45 one end of a flexible rubber hose herein shownand being slightly smaller in diameter surrounding an interior sleeve orfitting II 'in than said hose' It will thus be seen a the position to beclamped thereto by the improved clamp will evenly and tightly compressthe hose against thefitting end II with considerable force hose clamp ofthis invention which is indicated un thjg in itsentirety by the numerall2. The hose clamp preferably from 25 to 75 Do force be 50 in de endentu on the siz 1' His preferably made of high carbon steel wire 5m gension2 clamp e 0 wire and the of any desired cross-section, and is hereinshown From the above it i bviou that an emcient 88 mp i 8rlns-shapedbody portion l3 0! self-tightening hose clamp has beenprovided as circul r c s-s ti in ove l pping interwhich is not dependentupon the use of screws 55 p and that or other form of adjusting membersto apply it in clamped condition upon the end of a hose. By the use ofthe releasable loop 20 of small wire, the hose clamp may be shipped tothe consumer in its largest diameter open condition ready for instantuse. A pair of tongs 2| or the like may be efliciently used to againpress the ends it and I1 together to release the clamp l2 from itsclamping position about the hose, and it desired, a new loop 20 may beagain slipped over the ends it and ll of the clamp into the notches l8and It to retain the removed clamp in its open "position ready forfuture use when again desired.

In the form of the invention shown in Fig. 5.

the ends of the modified hose clamp 22 are not turned up, but are formedtangent to the loop and provided with notches 23, 24 for receiving theelongated wire loop 20. The operation of this form at the invention issimilar to that of the first form.

While there have been disclosed in this specifi tion two forms in whichthe invention may be embodied, it is to be understood that these formsare shown for the purpose of illustration only, the invention is nottobe limited to the specific disclosures, but may bemodified and embodiedin various other forms without departe ing from its spirit. In short,the invention includes all the modifications and embodiments comingwithin the scope of the following claims.

Having thus fully described the invention, what is claimed as new andfor which it is desired to secure Letters Patent, is:

1. In a hose clamp, a single tempered wire, the the form of asubstantially circular body preloop oi. springmid-portion of which is informed to a smaller diameter than the hose to be clamped, said loophaving opposed juxtaposed overlapping end sections lying in a planetangent to said circular body portion at the point of overlapping,whereby when the extremities of said loop are pressed together by a pairof tongs or pliers, the body of said ring will be vertically elongatedand spread away from said hose.

2. In a hose clamp, a single loop of springtempered wire, themid-portion of which is in the form of a substantially circular bodypreformed to a smaller diameter than the hose to be clamped, said loophaving juxtaposed overlapping end sections lying in a plane tangent tosaid circular body portion at the point of overlapping, to provide atleast a 360 contact with the hose, the outer ends of said end sectionsextending outwardly from said circular body portion beyond theoverlapping point so as to cause said loop to spread away from the hosewithout binding when the extremities thereof are pressed together with atool for adjusting and removing said clamp. j

3. In a device for adjustably clamping a soft rubber hose upon a rigidinterior tube, a spring tempered singleloop of wire of relatively heavymetal stock, the mid-portion of said loop comprising a substantiallycircular body, the ends of said body being in juxtaposed overlappingrelation to provide at least a 360 contact, the extremities of said looplying outside a plane tangent to said circular body at the point ofoverlapping, and a severable loop of soft wire engaging said extremitiesto initially hold said ring in expanded condition without binding saidhose.

DAMIANO ARRAS.

